Question

Xml of H2 diffused through a hole in a container in 5sec Calculate time taken for effusion of same volume of gas specified below under identical condition is.
a) 10sec , He
b) 20 sec , O2
c) 25 sec , CO2
d) 5sec , CO2​

Answer 1

Answer: A

10s, He

B

20s, O2

C

25s, CO

D

55s, CO2

Solution

For the same volume diffused,

t∝M (Graham' s law)

t1t2=M1M2−−−−√

(a) 510≠24−−√

(b) 520=232−−−√

(c) 525≠228−−−√

(d) 555≠244−−−√

Explanation:

Answer 2

20 second, O2

is your right option.

I hope it's helpful.